market freq_block round_num bid_amt bidder_num date time net_bid_amt sort_col_1 sort_col_2 ME49 B 5 1 1228 4/17/97 09:29:11 1 9 2 ME52 A 5 34000 1225 4/17/97 09:08:06 25500 12 1 ME52 B 5 34000 1225 4/17/97 09:08:06 25500 12 2 ME52 B 5 31046 1224 4/17/97 09:19:50 23284 12 2 RE12 C 5 34000 1225 4/17/97 09:08:06 25500 13 23 RE12 D 5 34000 1225 4/17/97 09:08:06 25500 13 24